( function () {

    const _raycaster = new THREE.Raycaster();

    const _tempVector = new THREE.Vector3();

    const _tempVector2 = new THREE.Vector3();

    const _tempQuaternion = new THREE.Quaternion();

    const _unit = {
        X: new THREE.Vector3( 1, 0, 0 ),
        Y: new THREE.Vector3( 0, 1, 0 ),
        Z: new THREE.Vector3( 0, 0, 1 )
    };
    const _changeEvent = {
        type: 'change'
    };
    const _mouseDownEvent = {
        type: 'mouseDown'
    };
    const _mouseUpEvent = {
        type: 'mouseUp',
        mode: null
    };
    const _objectChangeEvent = {
        type: 'objectChange'
    };

    class TransformControls extends THREE.Object3D {

        constructor( camera, domElement ) {

            super();

            if ( domElement === undefined ) {

                console.warn( 'THREE.TransformControls: The second parameter "domElement" is now mandatory.' );
                domElement = document;

            }

            this.visible = false;
            this.domElement = domElement;
            this.domElement.style.touchAction = 'none'; // disable touch scroll

            const _gizmo = new TransformControlsGizmo();

            this._gizmo = _gizmo;
            this.add( _gizmo );

            const _plane = new TransformControlsPlane();

            this._plane = _plane;
            this.add( _plane );
            const scope = this; // Defined getter, setter and store for a property

            function defineProperty( propName, defaultValue ) {

                let propValue = defaultValue;
                Object.defineProperty( scope, propName, {
                    get: function () {

                        return propValue !== undefined ? propValue : defaultValue;

                    },
                    set: function ( value ) {

                        if ( propValue !== value ) {

                            propValue = value;
                            _plane[ propName ] = value;
                            _gizmo[ propName ] = value;
                            scope.dispatchEvent( {
                                type: propName + '-changed',
                                value: value
                            } );
                            scope.dispatchEvent( _changeEvent );

                        }

                    }
                } );
                scope[ propName ] = defaultValue;
                _plane[ propName ] = defaultValue;
                _gizmo[ propName ] = defaultValue;

            } // Define properties with getters/setter
            // Setting the defined property will automatically trigger change event
            // Defined properties are passed down to gizmo and plane


            defineProperty( 'camera', camera );
            defineProperty( 'object', undefined );
            defineProperty( 'enabled', true );
            defineProperty( 'axis', null );
            defineProperty( 'mode', 'translate' );
            defineProperty( 'translationSnap', null );
            defineProperty( 'rotationSnap', null );
            defineProperty( 'scaleSnap', null );
            defineProperty( 'space', 'world' );
            defineProperty( 'size', 1 );
            defineProperty( 'dragging', false );
            defineProperty( 'showX', true );
            defineProperty( 'showY', true );
            defineProperty( 'showZ', true ); // Reusable utility variables

            const worldPosition = new THREE.Vector3();
            const worldPositionStart = new THREE.Vector3();
            const worldQuaternion = new THREE.Quaternion();
            const worldQuaternionStart = new THREE.Quaternion();
            const cameraPosition = new THREE.Vector3();
            const cameraQuaternion = new THREE.Quaternion();
            const pointStart = new THREE.Vector3();
            const pointEnd = new THREE.Vector3();
            const rotationAxis = new THREE.Vector3();
            const rotationAngle = 0;
            const eye = new THREE.Vector3(); // TODO: remove properties unused in plane and gizmo

            defineProperty( 'worldPosition', worldPosition );
            defineProperty( 'worldPositionStart', worldPositionStart );
            defineProperty( 'worldQuaternion', worldQuaternion );
            defineProperty( 'worldQuaternionStart', worldQuaternionStart );
            defineProperty( 'cameraPosition', cameraPosition );
            defineProperty( 'cameraQuaternion', cameraQuaternion );
            defineProperty( 'pointStart', pointStart );
            defineProperty( 'pointEnd', pointEnd );
            defineProperty( 'rotationAxis', rotationAxis );
            defineProperty( 'rotationAngle', rotationAngle );
            defineProperty( 'eye', eye );
            this._offset = new THREE.Vector3();
            this._startNorm = new THREE.Vector3();
            this._endNorm = new THREE.Vector3();
            this._cameraScale = new THREE.Vector3();
            this._parentPosition = new THREE.Vector3();
            this._parentQuaternion = new THREE.Quaternion();
            this._parentQuaternionInv = new THREE.Quaternion();
            this._parentScale = new THREE.Vector3();
            this._worldScaleStart = new THREE.Vector3();
            this._worldQuaternionInv = new THREE.Quaternion();
            this._worldScale = new THREE.Vector3();
            this._positionStart = new THREE.Vector3();
            this._quaternionStart = new THREE.Quaternion();
            this._scaleStart = new THREE.Vector3();
            this._getPointer = getPointer.bind( this );
            this._onPointerDown = onPointerDown.bind( this );
            this._onPointerHover = onPointerHover.bind( this );
            this._onPointerMove = onPointerMove.bind( this );
            this._onPointerUp = onPointerUp.bind( this );
            this.domElement.addEventListener( 'pointerdown', this._onPointerDown );
            this.domElement.addEventListener( 'pointermove', this._onPointerHover );
            this.domElement.addEventListener( 'pointerup', this._onPointerUp );

        } // updateMatrixWorld  updates key transformation variables


        updateMatrixWorld() {

            if ( this.object !== undefined ) {

                this.object.updateMatrixWorld();

                if ( this.object.parent === null ) {

                    console.error( 'TransformControls: The attached 3D object must be a part of the scene graph.' );

                } else {

                    this.object.parent.matrixWorld.decompose( this._parentPosition, this._parentQuaternion, this._parentScale );

                }

                this.object.matrixWorld.decompose( this.worldPosition, this.worldQuaternion, this._worldScale );

                this._parentQuaternionInv.copy( this._parentQuaternion ).invert();

                this._worldQuaternionInv.copy( this.worldQuaternion ).invert();

            }

            this.camera.updateMatrixWorld();
            this.camera.matrixWorld.decompose( this.cameraPosition, this.cameraQuaternion, this._cameraScale );
            this.eye.copy( this.cameraPosition ).sub( this.worldPosition ).normalize();
            super.updateMatrixWorld( this );

        }

        pointerHover( pointer ) {

            if ( this.object === undefined || this.dragging === true ) return;

            _raycaster.setFromCamera( pointer, this.camera );

            const intersect = intersectObjectWithRay( this._gizmo.picker[ this.mode ], _raycaster );

            if ( intersect ) {

                this.axis = intersect.object.name;

            } else {

                this.axis = null;

            }

        }

        pointerDown( pointer ) {

            if ( this.object === undefined || this.dragging === true || pointer.button !== 0 ) return;

            if ( this.axis !== null ) {

                _raycaster.setFromCamera( pointer, this.camera );

                const planeIntersect = intersectObjectWithRay( this._plane, _raycaster, true );

                if ( planeIntersect ) {

                    let space = this.space;

                    if ( this.mode === 'scale' ) {

                        space = 'local';

                    } else if ( this.axis === 'E' || this.axis === 'XYZE' || this.axis === 'XYZ' ) {

                        space = 'world';

                    }

                    if ( space === 'local' && this.mode === 'rotate' ) {

                        const snap = this.rotationSnap;
                        if ( this.axis === 'X' && snap ) this.object.rotation.x = Math.round( this.object.rotation.x / snap ) * snap;
                        if ( this.axis === 'Y' && snap ) this.object.rotation.y = Math.round( this.object.rotation.y / snap ) * snap;
                        if ( this.axis === 'Z' && snap ) this.object.rotation.z = Math.round( this.object.rotation.z / snap ) * snap;

                    }

                    this.object.updateMatrixWorld();
                    this.object.parent.updateMatrixWorld();

                    this._positionStart.copy( this.object.position );

                    this._quaternionStart.copy( this.object.quaternion );

                    this._scaleStart.copy( this.object.scale );

                    this.object.matrixWorld.decompose( this.worldPositionStart, this.worldQuaternionStart, this._worldScaleStart );
                    this.pointStart.copy( planeIntersect.point ).sub( this.worldPositionStart );

                }

                this.dragging = true;
                _mouseDownEvent.mode = this.mode;
                this.dispatchEvent( _mouseDownEvent );

            }

        }

        pointerMove( pointer ) {

            const axis = this.axis;
            const mode = this.mode;
            const object = this.object;
            let space = this.space;

            if ( mode === 'scale' ) {

                space = 'local';

            } else if ( axis === 'E' || axis === 'XYZE' || axis === 'XYZ' ) {

                space = 'world';

            }

            if ( object === undefined || axis === null || this.dragging === false || pointer.button !== - 1 ) return;

            _raycaster.setFromCamera( pointer, this.camera );

            const planeIntersect = intersectObjectWithRay( this._plane, _raycaster, true );
            if ( ! planeIntersect ) return;
            this.pointEnd.copy( planeIntersect.point ).sub( this.worldPositionStart );

            if ( mode === 'translate' ) {

                // Apply translate
                this._offset.copy( this.pointEnd ).sub( this.pointStart );

                if ( space === 'local' && axis !== 'XYZ' ) {

                    this._offset.applyQuaternion( this._worldQuaternionInv );

                }

                if ( axis.indexOf( 'X' ) === - 1 ) this._offset.x = 0;
                if ( axis.indexOf( 'Y' ) === - 1 ) this._offset.y = 0;
                if ( axis.indexOf( 'Z' ) === - 1 ) this._offset.z = 0;

                if ( space === 'local' && axis !== 'XYZ' ) {

                    this._offset.applyQuaternion( this._quaternionStart ).divide( this._parentScale );

                } else {

                    this._offset.applyQuaternion( this._parentQuaternionInv ).divide( this._parentScale );

                }

                object.position.copy( this._offset ).add( this._positionStart ); // Apply translation snap

                if ( this.translationSnap ) {

                    if ( space === 'local' ) {

                        object.position.applyQuaternion( _tempQuaternion.copy( this._quaternionStart ).invert() );

                        if ( axis.search( 'X' ) !== - 1 ) {

                            object.position.x = Math.round( object.position.x / this.translationSnap ) * this.translationSnap;

                        }

                        if ( axis.search( 'Y' ) !== - 1 ) {

                            object.position.y = Math.round( object.position.y / this.translationSnap ) * this.translationSnap;

                        }

                        if ( axis.search( 'Z' ) !== - 1 ) {

                            object.position.z = Math.round( object.position.z / this.translationSnap ) * this.translationSnap;

                        }

                        object.position.applyQuaternion( this._quaternionStart );

                    }

                    if ( space === 'world' ) {

                        if ( object.parent ) {

                            object.position.add( _tempVector.setFromMatrixPosition( object.parent.matrixWorld ) );

                        }

                        if ( axis.search( 'X' ) !== - 1 ) {

                            object.position.x = Math.round( object.position.x / this.translationSnap ) * this.translationSnap;

                        }

                        if ( axis.search( 'Y' ) !== - 1 ) {

                            object.position.y = Math.round( object.position.y / this.translationSnap ) * this.translationSnap;

                        }

                        if ( axis.search( 'Z' ) !== - 1 ) {

                            object.position.z = Math.round( object.position.z / this.translationSnap ) * this.translationSnap;

                        }

                        if ( object.parent ) {

                            object.position.sub( _tempVector.setFromMatrixPosition( object.parent.matrixWorld ) );

                        }

                    }

                }

            } else if ( mode === 'scale' ) {

                if ( axis.search( 'XYZ' ) !== - 1 ) {

                    let d = this.pointEnd.length() / this.pointStart.length();
                    if ( this.pointEnd.dot( this.pointStart ) < 0 ) d *= - 1;

                    _tempVector2.set( d, d, d );

                } else {

                    _tempVector.copy( this.pointStart );

                    _tempVector2.copy( this.pointEnd );

                    _tempVector.applyQuaternion( this._worldQuaternionInv );

                    _tempVector2.applyQuaternion( this._worldQuaternionInv );

                    _tempVector2.divide( _tempVector );

                    if ( axis.search( 'X' ) === - 1 ) {

                        _tempVector2.x = 1;

                    }

                    if ( axis.search( 'Y' ) === - 1 ) {

                        _tempVector2.y = 1;

                    }

                    if ( axis.search( 'Z' ) === - 1 ) {

                        _tempVector2.z = 1;

                    }

                } // Apply scale


                object.scale.copy( this._scaleStart ).multiply( _tempVector2 );

                if ( this.scaleSnap ) {

                    if ( axis.search( 'X' ) !== - 1 ) {

                        object.scale.x = Math.round( object.scale.x / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;

                    }

                    if ( axis.search( 'Y' ) !== - 1 ) {

                        object.scale.y = Math.round( object.scale.y / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;

                    }

                    if ( axis.search( 'Z' ) !== - 1 ) {

                        object.scale.z = Math.round( object.scale.z / this.scaleSnap ) * this.scaleSnap || this.scaleSnap;

                    }

                }

            } else if ( mode === 'rotate' ) {

                this._offset.copy( this.pointEnd ).sub( this.pointStart );

                const ROTATION_SPEED = 20 / this.worldPosition.distanceTo( _tempVector.setFromMatrixPosition( this.camera.matrixWorld ) );

                if ( axis === 'E' ) {

                    this.rotationAxis.copy( this.eye );
                    this.rotationAngle = this.pointEnd.angleTo( this.pointStart );

                    this._startNorm.copy( this.pointStart ).normalize();

                    this._endNorm.copy( this.pointEnd ).normalize();

                    this.rotationAngle *= this._endNorm.cross( this._startNorm ).dot( this.eye ) < 0 ? 1 : - 1;

                } else if ( axis === 'XYZE' ) {

                    this.rotationAxis.copy( this._offset ).cross( this.eye ).normalize();
                    this.rotationAngle = this._offset.dot( _tempVector.copy( this.rotationAxis ).cross( this.eye ) ) * ROTATION_SPEED;

                } else if ( axis === 'X' || axis === 'Y' || axis === 'Z' ) {

                    this.rotationAxis.copy( _unit[ axis ] );

                    _tempVector.copy( _unit[ axis ] );

                    if ( space === 'local' ) {

                        _tempVector.applyQuaternion( this.worldQuaternion );

                    }

                    this.rotationAngle = this._offset.dot( _tempVector.cross( this.eye ).normalize() ) * ROTATION_SPEED;

                } // Apply rotation snap


                if ( this.rotationSnap ) this.rotationAngle = Math.round( this.rotationAngle / this.rotationSnap ) * this.rotationSnap; // Apply rotate

                if ( space === 'local' && axis !== 'E' && axis !== 'XYZE' ) {

                    object.quaternion.copy( this._quaternionStart );
                    object.quaternion.multiply( _tempQuaternion.setFromAxisAngle( this.rotationAxis, this.rotationAngle ) ).normalize();

                } else {

                    this.rotationAxis.applyQuaternion( this._parentQuaternionInv );
                    object.quaternion.copy( _tempQuaternion.setFromAxisAngle( this.rotationAxis, this.rotationAngle ) );
                    object.quaternion.multiply( this._quaternionStart ).normalize();

                }

            }

            this.dispatchEvent( _changeEvent );
            this.dispatchEvent( _objectChangeEvent );

        }

        pointerUp( pointer ) {

            if ( pointer.button !== 0 ) return;

            if ( this.dragging && this.axis !== null ) {

                _mouseUpEvent.mode = this.mode;
                this.dispatchEvent( _mouseUpEvent );

            }

            this.dragging = false;
            this.axis = null;

        }

        dispose() {

            this.domElement.removeEventListener( 'pointerdown', this._onPointerDown );
            this.domElement.removeEventListener( 'pointermove', this._onPointerHover );
            this.domElement.removeEventListener( 'pointermove', this._onPointerMove );
            this.domElement.removeEventListener( 'pointerup', this._onPointerUp );
            this.traverse( function ( child ) {

                if ( child.geometry ) child.geometry.dispose();
                if ( child.material ) child.material.dispose();

            } );

        } // Set current object


        attach( object ) {

            this.object = object;
            this.visible = true;
            return this;

        } // Detatch from object


        detach() {

            this.object = undefined;
            this.visible = false;
            this.axis = null;
            return this;

        }

        getRaycaster() {

            return _raycaster;

        } // TODO: deprecate


        getMode() {

            return this.mode;

        }

        setMode( mode ) {

            this.mode = mode;

        }

        setTranslationSnap( translationSnap ) {

            this.translationSnap = translationSnap;

        }

        setRotationSnap( rotationSnap ) {

            this.rotationSnap = rotationSnap;

        }

        setScaleSnap( scaleSnap ) {

            this.scaleSnap = scaleSnap;

        }

        setSize( size ) {

            this.size = size;

        }

        setSpace( space ) {

            this.space = space;

        }

        update() {

            console.warn( 'THREE.TransformControls: update function has no more functionality and therefore has been deprecated.' );

        }

    }

    TransformControls.prototype.isTransformControls = true; // mouse / touch event handlers

    function getPointer( event ) {

        if ( this.domElement.ownerDocument.pointerLockElement ) {

            return {
                x: 0,
                y: 0,
                button: event.button
            };

        } else {

            const rect = this.domElement.getBoundingClientRect();
            return {
                x: ( event.clientX - rect.left ) / rect.width * 2 - 1,
                y: - ( event.clientY - rect.top ) / rect.height * 2 + 1,
                button: event.button
            };

        }

    }

    function onPointerHover( event ) {

        if ( ! this.enabled ) return;

        switch ( event.pointerType ) {

            case 'mouse':
            case 'pen':
                this.pointerHover( this._getPointer( event ) );
                break;

        }

    }

    function onPointerDown( event ) {

        if ( ! this.enabled ) return;
        this.domElement.setPointerCapture( event.pointerId );
        this.domElement.addEventListener( 'pointermove', this._onPointerMove );
        this.pointerHover( this._getPointer( event ) );
        this.pointerDown( this._getPointer( event ) );

    }

    function onPointerMove( event ) {

        if ( ! this.enabled ) return;
        this.pointerMove( this._getPointer( event ) );

    }

    function onPointerUp( event ) {

        if ( ! this.enabled ) return;
        this.domElement.releasePointerCapture( event.pointerId );
        this.domElement.removeEventListener( 'pointermove', this._onPointerMove );
        this.pointerUp( this._getPointer( event ) );

    }

    function intersectObjectWithRay( object, raycaster, includeInvisible ) {

        const allIntersections = raycaster.intersectObject( object, true );

        for ( let i = 0; i < allIntersections.length; i ++ ) {

            if ( allIntersections[ i ].object.visible || includeInvisible ) {

                return allIntersections[ i ];

            }

        }

        return false;

    } //
    // Reusable utility variables


    const _tempEuler = new THREE.Euler();

    const _alignVector = new THREE.Vector3( 0, 1, 0 );

    const _zeroVector = new THREE.Vector3( 0, 0, 0 );

    const _lookAtMatrix = new THREE.Matrix4();

    const _tempQuaternion2 = new THREE.Quaternion();

    const _identityQuaternion = new THREE.Quaternion();

    const _dirVector = new THREE.Vector3();

    const _tempMatrix = new THREE.Matrix4();

    const _unitX = new THREE.Vector3( 1, 0, 0 );

    const _unitY = new THREE.Vector3( 0, 1, 0 );

    const _unitZ = new THREE.Vector3( 0, 0, 1 );

    const _v1 = new THREE.Vector3();

    const _v2 = new THREE.Vector3();

    const _v3 = new THREE.Vector3();

    class TransformControlsGizmo extends THREE.Object3D {

        constructor() {

            super();
            this.type = 'TransformControlsGizmo'; // shared materials

            const gizmoMaterial = new THREE.MeshBasicMaterial( {
                depthTest: false,
                depthWrite: false,
                fog: false,
                toneMapped: false,
                transparent: true
            } );
            const gizmoLineMaterial = new THREE.LineBasicMaterial( {
                depthTest: false,
                depthWrite: false,
                fog: false,
                toneMapped: false,
                transparent: true
            } ); // Make unique material for each axis/color

            const matInvisible = gizmoMaterial.clone();
            matInvisible.opacity = 0.15;
            const matHelper = gizmoLineMaterial.clone();
            matHelper.opacity = 0.5;
            const matRed = gizmoMaterial.clone();
            matRed.color.setHex( 0xff0000 );
            const matGreen = gizmoMaterial.clone();
            matGreen.color.setHex( 0x00ff00 );
            const matBlue = gizmoMaterial.clone();
            matBlue.color.setHex( 0x0000ff );
            const matRedTransparent = gizmoMaterial.clone();
            matRedTransparent.color.setHex( 0xff0000 );
            matRedTransparent.opacity = 0.5;
            const matGreenTransparent = gizmoMaterial.clone();
            matGreenTransparent.color.setHex( 0x00ff00 );
            matGreenTransparent.opacity = 0.5;
            const matBlueTransparent = gizmoMaterial.clone();
            matBlueTransparent.color.setHex( 0x0000ff );
            matBlueTransparent.opacity = 0.5;
            const matWhiteTransparent = gizmoMaterial.clone();
            matWhiteTransparent.opacity = 0.25;
            const matYellowTransparent = gizmoMaterial.clone();
            matYellowTransparent.color.setHex( 0xffff00 );
            matYellowTransparent.opacity = 0.25;
            const matYellow = gizmoMaterial.clone();
            matYellow.color.setHex( 0xffff00 );
            const matGray = gizmoMaterial.clone();
            matGray.color.setHex( 0x787878 ); // reusable geometry

            const arrowGeometry = new THREE.CylinderGeometry( 0, 0.04, 0.1, 12 );
            arrowGeometry.translate( 0, 0.05, 0 );
            const scaleHandleGeometry = new THREE.BoxGeometry( 0.08, 0.08, 0.08 );
            scaleHandleGeometry.translate( 0, 0.04, 0 );
            const lineGeometry = new THREE.BufferGeometry();
            lineGeometry.setAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0, 1, 0, 0 ], 3 ) );
            const lineGeometry2 = new THREE.CylinderGeometry( 0.0075, 0.0075, 0.5, 3 );
            lineGeometry2.translate( 0, 0.25, 0 );

            function CircleGeometry( radius, arc ) {

                const geometry = new THREE.TorusGeometry( radius, 0.0075, 3, 64, arc * Math.PI * 2 );
                geometry.rotateY( Math.PI / 2 );
                geometry.rotateX( Math.PI / 2 );
                return geometry;

            } // Special geometry for transform helper. If scaled with position vector it spans from [0,0,0] to position


            function TranslateHelperGeometry() {

                const geometry = new THREE.BufferGeometry();
                geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( [ 0, 0, 0, 1, 1, 1 ], 3 ) );
                return geometry;

            } // Gizmo definitions - custom hierarchy definitions for setupGizmo() function


            const gizmoTranslate = {
                X: [[ new THREE.Mesh( arrowGeometry, matRed ), [ 0.5, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( arrowGeometry, matRed ), [ - 0.5, 0, 0 ], [ 0, 0, Math.PI / 2 ]], [ new THREE.Mesh( lineGeometry2, matRed ), [ 0, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]],
                Y: [[ new THREE.Mesh( arrowGeometry, matGreen ), [ 0, 0.5, 0 ]], [ new THREE.Mesh( arrowGeometry, matGreen ), [ 0, - 0.5, 0 ], [ Math.PI, 0, 0 ]], [ new THREE.Mesh( lineGeometry2, matGreen ) ]],
                Z: [[ new THREE.Mesh( arrowGeometry, matBlue ), [ 0, 0, 0.5 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( arrowGeometry, matBlue ), [ 0, 0, - 0.5 ], [ - Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( lineGeometry2, matBlue ), null, [ Math.PI / 2, 0, 0 ]]],
                XYZ: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.1, 0 ), matWhiteTransparent.clone() ), [ 0, 0, 0 ]]],
                XY: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matBlueTransparent.clone() ), [ 0.15, 0.15, 0 ]]],
                YZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matRedTransparent.clone() ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]]],
                XZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matGreenTransparent.clone() ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]]]
            };
            const pickerTranslate = {
                X: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0.3, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ - 0.3, 0, 0 ], [ 0, 0, Math.PI / 2 ]]],
                Y: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0.3, 0 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, - 0.3, 0 ], [ 0, 0, Math.PI ]]],
                Z: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0, 0.3 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0, - 0.3 ], [ - Math.PI / 2, 0, 0 ]]],
                XYZ: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.2, 0 ), matInvisible ) ]],
                XY: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0.15, 0.15, 0 ]]],
                YZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]]],
                XZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]]]
            };
            const helperTranslate = {
                START: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.01, 2 ), matHelper ), null, null, null, 'helper' ]],
                END: [[ new THREE.Mesh( new THREE.OctahedronGeometry( 0.01, 2 ), matHelper ), null, null, null, 'helper' ]],
                DELTA: [[ new THREE.Line( TranslateHelperGeometry(), matHelper ), null, null, null, 'helper' ]],
                X: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]],
                Y: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, - 1e3, 0 ], [ 0, 0, Math.PI / 2 ], [ 1e6, 1, 1 ], 'helper' ]],
                Z: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, 0, - 1e3 ], [ 0, - Math.PI / 2, 0 ], [ 1e6, 1, 1 ], 'helper' ]]
            };
            const gizmoRotate = {
                XYZE: [[ new THREE.Mesh( CircleGeometry( 0.5, 1 ), matGray ), null, [ 0, Math.PI / 2, 0 ]]],
                X: [[ new THREE.Mesh( CircleGeometry( 0.5, 0.5 ), matRed ) ]],
                Y: [[ new THREE.Mesh( CircleGeometry( 0.5, 0.5 ), matGreen ), null, [ 0, 0, - Math.PI / 2 ]]],
                Z: [[ new THREE.Mesh( CircleGeometry( 0.5, 0.5 ), matBlue ), null, [ 0, Math.PI / 2, 0 ]]],
                E: [[ new THREE.Mesh( CircleGeometry( 0.75, 1 ), matYellowTransparent ), null, [ 0, Math.PI / 2, 0 ]]]
            };
            const helperRotate = {
                AXIS: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]]
            };
            const pickerRotate = {
                XYZE: [[ new THREE.Mesh( new THREE.SphereGeometry( 0.25, 10, 8 ), matInvisible ) ]],
                X: [[ new THREE.Mesh( new THREE.TorusGeometry( 0.5, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ 0, - Math.PI / 2, - Math.PI / 2 ]]],
                Y: [[ new THREE.Mesh( new THREE.TorusGeometry( 0.5, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ Math.PI / 2, 0, 0 ]]],
                Z: [[ new THREE.Mesh( new THREE.TorusGeometry( 0.5, 0.1, 4, 24 ), matInvisible ), [ 0, 0, 0 ], [ 0, 0, - Math.PI / 2 ]]],
                E: [[ new THREE.Mesh( new THREE.TorusGeometry( 0.75, 0.1, 2, 24 ), matInvisible ) ]]
            };
            const gizmoScale = {
                X: [[ new THREE.Mesh( scaleHandleGeometry, matRed ), [ 0.5, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( lineGeometry2, matRed ), [ 0, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( scaleHandleGeometry, matRed ), [ - 0.5, 0, 0 ], [ 0, 0, Math.PI / 2 ]]],
                Y: [[ new THREE.Mesh( scaleHandleGeometry, matGreen ), [ 0, 0.5, 0 ]], [ new THREE.Mesh( lineGeometry2, matGreen ) ], [ new THREE.Mesh( scaleHandleGeometry, matGreen ), [ 0, - 0.5, 0 ], [ 0, 0, Math.PI ]]],
                Z: [[ new THREE.Mesh( scaleHandleGeometry, matBlue ), [ 0, 0, 0.5 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( lineGeometry2, matBlue ), [ 0, 0, 0 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( scaleHandleGeometry, matBlue ), [ 0, 0, - 0.5 ], [ - Math.PI / 2, 0, 0 ]]],
                XY: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matBlueTransparent ), [ 0.15, 0.15, 0 ]]],
                YZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matRedTransparent ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]]],
                XZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.15, 0.15, 0.01 ), matGreenTransparent ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]]],
                XYZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.1, 0.1, 0.1 ), matWhiteTransparent.clone() ) ]]
            };
            const pickerScale = {
                X: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0.3, 0, 0 ], [ 0, 0, - Math.PI / 2 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ - 0.3, 0, 0 ], [ 0, 0, Math.PI / 2 ]]],
                Y: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0.3, 0 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, - 0.3, 0 ], [ 0, 0, Math.PI ]]],
                Z: [[ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0, 0.3 ], [ Math.PI / 2, 0, 0 ]], [ new THREE.Mesh( new THREE.CylinderGeometry( 0.2, 0, 0.6, 4 ), matInvisible ), [ 0, 0, - 0.3 ], [ - Math.PI / 2, 0, 0 ]]],
                XY: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0.15, 0.15, 0 ]]],
                YZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0, 0.15, 0.15 ], [ 0, Math.PI / 2, 0 ]]],
                XZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.01 ), matInvisible ), [ 0.15, 0, 0.15 ], [ - Math.PI / 2, 0, 0 ]]],
                XYZ: [[ new THREE.Mesh( new THREE.BoxGeometry( 0.2, 0.2, 0.2 ), matInvisible ), [ 0, 0, 0 ]]]
            };
            const helperScale = {
                X: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ - 1e3, 0, 0 ], null, [ 1e6, 1, 1 ], 'helper' ]],
                Y: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, - 1e3, 0 ], [ 0, 0, Math.PI / 2 ], [ 1e6, 1, 1 ], 'helper' ]],
                Z: [[ new THREE.Line( lineGeometry, matHelper.clone() ), [ 0, 0, - 1e3 ], [ 0, - Math.PI / 2, 0 ], [ 1e6, 1, 1 ], 'helper' ]]
            }; // Creates an THREE.Object3D with gizmos described in custom hierarchy definition.

            function setupGizmo( gizmoMap ) {

                const gizmo = new THREE.Object3D();

                for ( const name in gizmoMap ) {

                    for ( let i = gizmoMap[ name ].length; i --; ) {

                        const object = gizmoMap[ name ][ i ][ 0 ].clone();
                        const position = gizmoMap[ name ][ i ][ 1 ];
                        const rotation = gizmoMap[ name ][ i ][ 2 ];
                        const scale = gizmoMap[ name ][ i ][ 3 ];
                        const tag = gizmoMap[ name ][ i ][ 4 ]; // name and tag properties are essential for picking and updating logic.

                        object.name = name;
                        object.tag = tag;

                        if ( position ) {

                            object.position.set( position[ 0 ], position[ 1 ], position[ 2 ] );

                        }

                        if ( rotation ) {

                            object.rotation.set( rotation[ 0 ], rotation[ 1 ], rotation[ 2 ] );

                        }

                        if ( scale ) {

                            object.scale.set( scale[ 0 ], scale[ 1 ], scale[ 2 ] );

                        }

                        object.updateMatrix();
                        const tempGeometry = object.geometry.clone();
                        tempGeometry.applyMatrix4( object.matrix );
                        object.geometry = tempGeometry;
                        object.renderOrder = Infinity;
                        object.position.set( 0, 0, 0 );
                        object.rotation.set( 0, 0, 0 );
                        object.scale.set( 1, 1, 1 );
                        gizmo.add( object );

                    }

                }

                return gizmo;

            } // Gizmo creation


            this.gizmo = {};
            this.picker = {};
            this.helper = {};
            this.add( this.gizmo[ 'translate' ] = setupGizmo( gizmoTranslate ) );
            this.add( this.gizmo[ 'rotate' ] = setupGizmo( gizmoRotate ) );
            this.add( this.gizmo[ 'scale' ] = setupGizmo( gizmoScale ) );
            this.add( this.picker[ 'translate' ] = setupGizmo( pickerTranslate ) );
            this.add( this.picker[ 'rotate' ] = setupGizmo( pickerRotate ) );
            this.add( this.picker[ 'scale' ] = setupGizmo( pickerScale ) );
            this.add( this.helper[ 'translate' ] = setupGizmo( helperTranslate ) );
            this.add( this.helper[ 'rotate' ] = setupGizmo( helperRotate ) );
            this.add( this.helper[ 'scale' ] = setupGizmo( helperScale ) ); // Pickers should be hidden always

            this.picker[ 'translate' ].visible = false;
            this.picker[ 'rotate' ].visible = false;
            this.picker[ 'scale' ].visible = false;

        } // updateMatrixWorld will update transformations and appearance of individual handles


        updateMatrixWorld( force ) {

            const space = this.mode === 'scale' ? 'local' : this.space; // scale always oriented to local rotation

            const quaternion = space === 'local' ? this.worldQuaternion : _identityQuaternion; // Show only gizmos for current transform mode

            this.gizmo[ 'translate' ].visible = this.mode === 'translate';
            this.gizmo[ 'rotate' ].visible = this.mode === 'rotate';
            this.gizmo[ 'scale' ].visible = this.mode === 'scale';
            this.helper[ 'translate' ].visible = this.mode === 'translate';
            this.helper[ 'rotate' ].visible = this.mode === 'rotate';
            this.helper[ 'scale' ].visible = this.mode === 'scale';
            let handles = [];
            handles = handles.concat( this.picker[ this.mode ].children );
            handles = handles.concat( this.gizmo[ this.mode ].children );
            handles = handles.concat( this.helper[ this.mode ].children );

            for ( let i = 0; i < handles.length; i ++ ) {

                const handle = handles[ i ]; // hide aligned to camera

                handle.visible = true;
                handle.rotation.set( 0, 0, 0 );
                handle.position.copy( this.worldPosition );
                let factor;

                if ( this.camera.isOrthographicCamera ) {

                    factor = ( this.camera.top - this.camera.bottom ) / this.camera.zoom;

                } else {

                    factor = this.worldPosition.distanceTo( this.cameraPosition ) * Math.min( 1.9 * Math.tan( Math.PI * this.camera.fov / 360 ) / this.camera.zoom, 7 );

                }

                handle.scale.set( 1, 1, 1 ).multiplyScalar( factor * this.size / 4 ); // TODO: simplify helpers and consider decoupling from gizmo

                if ( handle.tag === 'helper' ) {

                    handle.visible = false;

                    if ( handle.name === 'AXIS' ) {

                        handle.position.copy( this.worldPositionStart );
                        handle.visible = !! this.axis;

                        if ( this.axis === 'X' ) {

                            _tempQuaternion.setFromEuler( _tempEuler.set( 0, 0, 0 ) );

                            handle.quaternion.copy( quaternion ).multiply( _tempQuaternion );

                            if ( Math.abs( _alignVector.copy( _unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {

                                handle.visible = false;

                            }

                        }

                        if ( this.axis === 'Y' ) {

                            _tempQuaternion.setFromEuler( _tempEuler.set( 0, 0, Math.PI / 2 ) );

                            handle.quaternion.copy( quaternion ).multiply( _tempQuaternion );

                            if ( Math.abs( _alignVector.copy( _unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {

                                handle.visible = false;

                            }

                        }

                        if ( this.axis === 'Z' ) {

                            _tempQuaternion.setFromEuler( _tempEuler.set( 0, Math.PI / 2, 0 ) );

                            handle.quaternion.copy( quaternion ).multiply( _tempQuaternion );

                            if ( Math.abs( _alignVector.copy( _unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) > 0.9 ) {

                                handle.visible = false;

                            }

                        }

                        if ( this.axis === 'XYZE' ) {

                            _tempQuaternion.setFromEuler( _tempEuler.set( 0, Math.PI / 2, 0 ) );

                            _alignVector.copy( this.rotationAxis );

                            handle.quaternion.setFromRotationMatrix( _lookAtMatrix.lookAt( _zeroVector, _alignVector, _unitY ) );
                            handle.quaternion.multiply( _tempQuaternion );
                            handle.visible = this.dragging;

                        }

                        if ( this.axis === 'E' ) {

                            handle.visible = false;

                        }

                    } else if ( handle.name === 'START' ) {

                        handle.position.copy( this.worldPositionStart );
                        handle.visible = this.dragging;

                    } else if ( handle.name === 'END' ) {

                        handle.position.copy( this.worldPosition );
                        handle.visible = this.dragging;

                    } else if ( handle.name === 'DELTA' ) {

                        handle.position.copy( this.worldPositionStart );
                        handle.quaternion.copy( this.worldQuaternionStart );

                        _tempVector.set( 1e-10, 1e-10, 1e-10 ).add( this.worldPositionStart ).sub( this.worldPosition ).multiplyScalar( - 1 );

                        _tempVector.applyQuaternion( this.worldQuaternionStart.clone().invert() );

                        handle.scale.copy( _tempVector );
                        handle.visible = this.dragging;

                    } else {

                        handle.quaternion.copy( quaternion );

                        if ( this.dragging ) {

                            handle.position.copy( this.worldPositionStart );

                        } else {

                            handle.position.copy( this.worldPosition );

                        }

                        if ( this.axis ) {

                            handle.visible = this.axis.search( handle.name ) !== - 1;

                        }

                    } // If updating helper, skip rest of the loop


                    continue;

                } // Align handles to current local or world rotation


                handle.quaternion.copy( quaternion );

                if ( this.mode === 'translate' || this.mode === 'scale' ) {

                    // Hide translate and scale axis facing the camera
                    const AXIS_HIDE_TRESHOLD = 0.99;
                    const PLANE_HIDE_TRESHOLD = 0.2;

                    if ( handle.name === 'X' ) {

                        if ( Math.abs( _alignVector.copy( _unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {

                            handle.scale.set( 1e-10, 1e-10, 1e-10 );
                            handle.visible = false;

                        }

                    }

                    if ( handle.name === 'Y' ) {

                        if ( Math.abs( _alignVector.copy( _unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {

                            handle.scale.set( 1e-10, 1e-10, 1e-10 );
                            handle.visible = false;

                        }

                    }

                    if ( handle.name === 'Z' ) {

                        if ( Math.abs( _alignVector.copy( _unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) > AXIS_HIDE_TRESHOLD ) {

                            handle.scale.set( 1e-10, 1e-10, 1e-10 );
                            handle.visible = false;

                        }

                    }

                    if ( handle.name === 'XY' ) {

                        if ( Math.abs( _alignVector.copy( _unitZ ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {

                            handle.scale.set( 1e-10, 1e-10, 1e-10 );
                            handle.visible = false;

                        }

                    }

                    if ( handle.name === 'YZ' ) {

                        if ( Math.abs( _alignVector.copy( _unitX ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {

                            handle.scale.set( 1e-10, 1e-10, 1e-10 );
                            handle.visible = false;

                        }

                    }

                    if ( handle.name === 'XZ' ) {

                        if ( Math.abs( _alignVector.copy( _unitY ).applyQuaternion( quaternion ).dot( this.eye ) ) < PLANE_HIDE_TRESHOLD ) {

                            handle.scale.set( 1e-10, 1e-10, 1e-10 );
                            handle.visible = false;

                        }

                    }

                } else if ( this.mode === 'rotate' ) {

                    // Align handles to current local or world rotation
                    _tempQuaternion2.copy( quaternion );

                    _alignVector.copy( this.eye ).applyQuaternion( _tempQuaternion.copy( quaternion ).invert() );

                    if ( handle.name.search( 'E' ) !== - 1 ) {

                        handle.quaternion.setFromRotationMatrix( _lookAtMatrix.lookAt( this.eye, _zeroVector, _unitY ) );

                    }

                    if ( handle.name === 'X' ) {

                        _tempQuaternion.setFromAxisAngle( _unitX, Math.atan2( - _alignVector.y, _alignVector.z ) );

                        _tempQuaternion.multiplyQuaternions( _tempQuaternion2, _tempQuaternion );

                        handle.quaternion.copy( _tempQuaternion );

                    }

                    if ( handle.name === 'Y' ) {

                        _tempQuaternion.setFromAxisAngle( _unitY, Math.atan2( _alignVector.x, _alignVector.z ) );

                        _tempQuaternion.multiplyQuaternions( _tempQuaternion2, _tempQuaternion );

                        handle.quaternion.copy( _tempQuaternion );

                    }

                    if ( handle.name === 'Z' ) {

                        _tempQuaternion.setFromAxisAngle( _unitZ, Math.atan2( _alignVector.y, _alignVector.x ) );

                        _tempQuaternion.multiplyQuaternions( _tempQuaternion2, _tempQuaternion );

                        handle.quaternion.copy( _tempQuaternion );

                    }

                } // Hide disabled axes


                handle.visible = handle.visible && ( handle.name.indexOf( 'X' ) === - 1 || this.showX );
                handle.visible = handle.visible && ( handle.name.indexOf( 'Y' ) === - 1 || this.showY );
                handle.visible = handle.visible && ( handle.name.indexOf( 'Z' ) === - 1 || this.showZ );
                handle.visible = handle.visible && ( handle.name.indexOf( 'E' ) === - 1 || this.showX && this.showY && this.showZ ); // highlight selected axis

                handle.material._color = handle.material._color || handle.material.color.clone();
                handle.material._opacity = handle.material._opacity || handle.material.opacity;
                handle.material.color.copy( handle.material._color );
                handle.material.opacity = handle.material._opacity;

                if ( this.enabled && this.axis ) {

                    if ( handle.name === this.axis ) {

                        handle.material.color.setHex( 0xffff00 );
                        handle.material.opacity = 1.0;

                    } else if ( this.axis.split( '' ).some( function ( a ) {

                        return handle.name === a;

                    } ) ) {

                        handle.material.color.setHex( 0xffff00 );
                        handle.material.opacity = 1.0;

                    }

                }

            }

            super.updateMatrixWorld( force );

        }

    }

    TransformControlsGizmo.prototype.isTransformControlsGizmo = true; //

    class TransformControlsPlane extends THREE.Mesh {

        constructor() {

            super( new THREE.PlaneGeometry( 100000, 100000, 2, 2 ), new THREE.MeshBasicMaterial( {
                visible: false,
                wireframe: true,
                side: THREE.DoubleSide,
                transparent: true,
                opacity: 0.1,
                toneMapped: false
            } ) );
            this.type = 'TransformControlsPlane';

        }

        updateMatrixWorld( force ) {

            let space = this.space;
            this.position.copy( this.worldPosition );
            if ( this.mode === 'scale' ) space = 'local'; // scale always oriented to local rotation

            _v1.copy( _unitX ).applyQuaternion( space === 'local' ? this.worldQuaternion : _identityQuaternion );

            _v2.copy( _unitY ).applyQuaternion( space === 'local' ? this.worldQuaternion : _identityQuaternion );

            _v3.copy( _unitZ ).applyQuaternion( space === 'local' ? this.worldQuaternion : _identityQuaternion ); // Align the plane for current transform mode, axis and space.


            _alignVector.copy( _v2 );

            switch ( this.mode ) {

                case 'translate':
                case 'scale':
                    switch ( this.axis ) {

                        case 'X':
                            _alignVector.copy( this.eye ).cross( _v1 );

                            _dirVector.copy( _v1 ).cross( _alignVector );

                            break;

                        case 'Y':
                            _alignVector.copy( this.eye ).cross( _v2 );

                            _dirVector.copy( _v2 ).cross( _alignVector );

                            break;

                        case 'Z':
                            _alignVector.copy( this.eye ).cross( _v3 );

                            _dirVector.copy( _v3 ).cross( _alignVector );

                            break;

                        case 'XY':
                            _dirVector.copy( _v3 );

                            break;

                        case 'YZ':
                            _dirVector.copy( _v1 );

                            break;

                        case 'XZ':
                            _alignVector.copy( _v3 );

                            _dirVector.copy( _v2 );

                            break;

                        case 'XYZ':
                        case 'E':
                            _dirVector.set( 0, 0, 0 );

                            break;

                    }

                    break;

                case 'rotate':
                default:
                    // special case for rotate
                    _dirVector.set( 0, 0, 0 );

            }

            if ( _dirVector.length() === 0 ) {

                // If in rotate mode, make the plane parallel to camera
                this.quaternion.copy( this.cameraQuaternion );

            } else {

                _tempMatrix.lookAt( _tempVector.set( 0, 0, 0 ), _dirVector, _alignVector );

                this.quaternion.setFromRotationMatrix( _tempMatrix );

            }

            super.updateMatrixWorld( force );

        }

    }

    TransformControlsPlane.prototype.isTransformControlsPlane = true;

    THREE.TransformControls = TransformControls;
    THREE.TransformControlsGizmo = TransformControlsGizmo;
    THREE.TransformControlsPlane = TransformControlsPlane;

} )();
